5 warlocks

[Èlemental]

Hello, I have grown very bored of my shamans, as that thing called arena isn't really for me. Therefore, I decided to make a new RaF account and I now have five warlocks on my main accounts. Currently the team is sitting at about 64, and I won't lie, they are like a walking nuke. I've been shocked at the amount of DPS five demo warlocks can put out. Now what I was wondering is, will my felguards be less of a factor when I hit level 80 and get my guys some relentless gear? I mean as of right now I can take players my level down in around ~6 seconds or less. In addition, a group of players I just run in and pop meta+imo aura and I feel like a suicide bomber. However, I grow weary of what the 80 bracket will contain, as I heard warlocks are rather squishy and demo isn't the best spec to be messing around with. So any thoughts would help.